3b12f529d7
Use the __ASSEMBLER__ macro to suppress C definitions from appearing in non-C files when the preprocessor is used. Other libsel4/*/constants.h files use this strategy to avoid duplicating definitions for seL4 object sizes that can changed based on kernel configuration.
106 lines
2.9 KiB
C
106 lines
2.9 KiB
C
/*
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* Copyright 2017, Data61
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* Commonwealth Scientific and Industrial Research Organisation (CSIRO)
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* ABN 41 687 119 230.
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*
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* This software may be distributed and modified according to the terms of
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* the BSD 2-Clause license. Note that NO WARRANTY is provided.
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* See "LICENSE_BSD2.txt" for details.
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*
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* @TAG(DATA61_BSD)
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*/
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#ifndef __API_CONSTANTS_H
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#define __API_CONSTANTS_H
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#ifdef HAVE_AUTOCONF
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#include <autoconf.h>
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#endif
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#ifndef __ASSEMBLER__
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#define LIBSEL4_BIT(n) (1ul<<(n))
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#ifdef CONFIG_HARDWARE_DEBUG_API
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/* API arg values for breakpoint API, "type" arguments. */
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typedef enum {
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seL4_DataBreakpoint = 0,
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seL4_InstructionBreakpoint,
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seL4_SingleStep,
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seL4_SoftwareBreakRequest,
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SEL4_FORCE_LONG_ENUM(seL4_BreakpointType)
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} seL4_BreakpointType;
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/* API arg values for breakpoint API, "access" arguments. */
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typedef enum {
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seL4_BreakOnRead = 0,
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seL4_BreakOnWrite,
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seL4_BreakOnReadWrite,
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seL4_MaxBreakpointAccess,
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SEL4_FORCE_LONG_ENUM(seL4_BreakpointAccess)
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} seL4_BreakpointAccess;
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/* Format of a debug-exception message. */
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enum {
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seL4_DebugException_FaultIP,
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seL4_DebugException_ExceptionReason,
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seL4_DebugException_TriggerAddress,
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seL4_DebugException_BreakpointNumber,
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seL4_DebugException_Length,
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SEL4_FORCE_LONG_ENUM(seL4_DebugException_Msg)
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} seL4_DebugException_Msg;
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#endif
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enum priorityConstants {
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seL4_InvalidPrio = -1,
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seL4_MinPrio = 0,
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seL4_MaxPrio = CONFIG_NUM_PRIORITIES - 1
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};
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/* seL4_MessageInfo_t defined in api/shared_types.bf */
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enum seL4_MsgLimits {
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seL4_MsgLengthBits = 7,
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seL4_MsgExtraCapBits = 2
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};
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enum {
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seL4_MsgMaxLength = 120,
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};
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#define seL4_MsgMaxExtraCaps (LIBSEL4_BIT(seL4_MsgExtraCapBits)-1)
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/* seL4_CapRights_t defined in shared_types_*.bf */
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#define seL4_CapRightsBits 4
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typedef enum {
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seL4_NoFailure = 0,
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seL4_InvalidRoot,
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seL4_MissingCapability,
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seL4_DepthMismatch,
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seL4_GuardMismatch,
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SEL4_FORCE_LONG_ENUM(seL4_LookupFailureType),
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} seL4_LookupFailureType;
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#endif /* !__ASSEMBLER__ */
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#ifdef CONFIG_KERNEL_MCS
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/* Minimum size of a scheduling context (2^{n} bytes) */
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#define seL4_MinSchedContextBits 8
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#ifndef __ASSEMBLER__
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/* the size of a scheduling context, excluding extra refills */
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#define seL4_CoreSchedContextBytes (10 * sizeof(seL4_Word) + (6 * 8))
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/* the size of a single extra refill */
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#define seL4_RefillSizeBytes (2 * 8)
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/*
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* @brief Calculate the max extra refills a scheduling context can contain for a specific size.
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*
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* @param size of the schedulding context. Must be >= seL4_MinSchedContextBits
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* @return the max number of extra refills that can be passed to seL4_SchedControl_Configure for
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* this scheduling context
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*/
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static inline seL4_Word seL4_MaxExtraRefills(seL4_Word size)
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{
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return (LIBSEL4_BIT(size) - seL4_CoreSchedContextBytes) / seL4_RefillSizeBytes;
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}
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#endif /* !__ASSEMBLER__ */
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#endif /* CONFIG_KERNEL_MCS */
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#endif /* __API_CONSTANTS_H */
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